5.0stang123

Ok guys ever since I have owned my stang there has been a vibration at highway speeds. I cannot figure out what is causing it and today really pissed me off as i put a new frpp aluminum DS in, and i was sure this would fix it...Well it didn't really, I can start to notice it at 75 mph and its in the steering wheel and the car. Luckily i dont ever drive on the highway cause this drives me nuts. Any suggestions? And no its not balancing I have tried 3 sets of rims.

1987gt40ttop

did you check the suspension for any loose or worn parts? you tried 3 sets of rims but where they all balanced right? did the problem happen the same with all 3 sets of wheels? check the tie rods and ball joints, also what kinda shape are your motor/trans mounts in? a broken mount can cause some pretty good vibration at high speeds

droptop302

is your car stick or auto? If its a stick, is you handle vibrating any buzzing noises?

5.0stang123

Ok, well i did hit a curb a year ago but i got it checked out and the alignment was fine. The shop also did the ball joints. All my suspension is new, eibach springs, new tokico shocks, monroe quads, CC plates ect. Rims and tires are brand new and balanced from AM.

Its always been at the same speed ( just above highway speed limit) . Well my car was up on the jacks today, i did notice that on the right front there was a tiny bit of play in the inner Tie Rod, but very slight. Do you think that would be enough? Oh and my motor mounts are def worn as i had to re adjust the fan shroud a bit but it has nothing to do with rpms just a certain speed.

droptop302

Sounds like u found it, I would put a hole new rack in.

50Stocker

i had a vibration in my car too, similar symptoms... It actually took a few things to check/ change. I went to a griggs alumn d/s, and took the counterbalance off the rear axle. I had a builder (PA performance) say that once you are not running stock gears anymore those are obsolete to the car... also rebalanced wheels, and changed tranny previoulsy bc thought main gear was out of spec. Also, check your tailshaft bushing... mine was worn...

sorry I wasnt as detailed as normal, just things I had to do to get her smooth as glass, good luck

1987gt40ttop

it could be any number of things with the more mods made to the suspension, like when the springs were done where the seats reused?

pete88gt

Yeh, or you could just replace your inner tie rod ends which are about $20 bucks at O'reilly's and are easy to put in, just rent the tool and mark the old inner tie rod where the lock nut is at and try your best to put in back in the same spot. Then go have an alignment done.

5.0stang123

Looks like ill try the inner Tie rod. This better fix it haha. Pete, I didn't know there was a special tool for this? I have only done outer Tie rod ends not inner.

nightmare90gt

do yourself a favor and replace the whole rack and pinion cause if you mess up the inner tie rod you will have to do it anyways, also does your steering wheel feel loose and it hesitates to move the wheels like there play in it.